A Study on the Data Compression Algorithm of Power Quality Based on Wavelet Transformation
1 The State Key Laboratory of Power Transmission and Distribution Equitment & System Security and New technology, College of Electric Engineering, Chongqing University, Chongqing, China
2 Jiangxi Power Co., Ltd of State Grid in Xingan, Ji’an, Jiangxi, China
3 College of Electric Engineering, Chongqing University, Chongqing, China
* Corresponding author: email@example.com
Based on the development history of wavelet transformation’s applications in data compression, this paper studies thee wavelets’ property of being continuous and discrete, establishes a power quality data compression model of wavelet transformation, discusses the threshold coefficient compression algorithm after the wavelet transformation, and makes an improvement with the low-frequency, high-frequency and self-adaptive power quality of the threshold compression algorithm. In the end, this paper verifies through a simulation experiment that the algorithm is adaptable to the compression of power quality data and signals are able to maintain a relatively low distortion.
Key words: wavelet transformation / power quality / data compression algorithm
© Owned by the authors, published by EDP Sciences, 2015
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